# Re: \[PATCH v8 03/17\] integrity: Introduce a Linux keyring called machine

- From: Jarkko Sakkinen \<jarkko@kernel.org\>
- Date: 2021-11-27 00:41:49 
- List: linux-security-module
- Page: https://ratatoskr.run/linux-security-module/2021/11/1588266
- Thread: https://ratatoskr.run/keyrings/2021/11/1583494/t.md

```text
On Tue, 2021-11-23 at 23:41 -0500, Eric Snowberg wrote:
> Many UEFI Linux distributions boot using shim.  The UEFI shim provides
> what is called Machine Owner Keys (MOK). Shim uses both the UEFI Secure
> Boot DB and MOK keys to validate the next step in the boot chain.  The
> MOK facility can be used to import user generated keys.  These keys can
> be used to sign an end-users development kernel build.  When Linux
> boots, both UEFI Secure Boot DB and MOK keys get loaded in the Linux
> .platform keyring.
> 
> Define a new Linux keyring called machine.  This keyring shall contain just
> MOK CA keys and not the remaining keys in the platform keyring. This new
> machine keyring will be used in follow on patches.  Unlike keys in the
> platform keyring, keys contained in the machine keyring will be trusted
> within the kernel if the end-user has chosen to do so.
> 
> Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>

Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>

/Jarkko
```